S-boxes is one of the process in the Data Encryption Standard (DES) protocol. i) Describe the function of S-boxes that makes DES a secure system. ii) Referring to S-box[1] in Fig. 1, show that S1(x1) ⊕ S1(x2) ≠ S1(x1 ⊕ x2) for x1 = 000000 and x2 = 000001

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
icon
Related questions
Question

S-boxes is one of the process in the Data Encryption Standard (DES) protocol.

i) Describe the function of S-boxes that makes DES a secure system.

ii) Referring to S-box[1] in Fig. 1, show that S1(x1) S1(x2) S1(x1 x2) for x1 = 000000 and x2 = 000001

15
1
8
14
6.
11
3
4
9.
7
2
13
12
5
10
3
13
4
7
15
2
8
14
12
1
10
6
9.
11
5
14
7
11
10
4
13
1
5
8
12
9.
3
15
13
8
10
1 3 15
4
2
11
6
7
12
5
14
Figure 1: S-box[1] or S[1]
Transcribed Image Text:15 1 8 14 6. 11 3 4 9. 7 2 13 12 5 10 3 13 4 7 15 2 8 14 12 1 10 6 9. 11 5 14 7 11 10 4 13 1 5 8 12 9. 3 15 13 8 10 1 3 15 4 2 11 6 7 12 5 14 Figure 1: S-box[1] or S[1]
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Recommended textbooks for you
Computer Networking: A Top-Down Approach (7th Edi…
Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON
Computer Organization and Design MIPS Edition, Fi…
Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning
Concepts of Database Management
Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning
Prelude to Programming
Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education
Sc Business Data Communications and Networking, T…
Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY